gearbox.

A housing and gear arrangement used to transmit motion, often changing speed or torque.

Use it for

Words that belong together

• a reduction gearbox
• a gearbox housing

On the page

The reduction gearbox vibrated after the motor settled into a steady hum.

Oil seeped from the gearbox housing near the output shaft.

Usage notes

Primary category: sci-fi. Forms: Singular gearbox; plural gearboxes. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings.